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A1=63
A2=64
A3=65
%m1=90%
%m2=5%
%m3=5%
Szukane:
mat=?
mat=A1*%m1+A2*%m2+A3*%m3/100%
Obliczenia:
mat=63*90%+64*5%+65*5%/100%
mat=5670+320+325/100%
mat=63,15 u
mat=(63*90+64*5+65*5)/100
mat=(5670+320+325)/100=63,15u